<div class="container" align="center">
    <!-- The fileinput-button span is used to style the file input field as button -->
    <hr class="clear">
    <span class="btn btn-success fileinput-button">
        <i class="icon-plus icon-white"></i>
        <span>Enviar arquivo de atualização</span>
        <!-- The file input field used as target for the file upload widget -->
        <input id="fileupload" type="file" name="files[]">
    </span>
    <br>
    <br>
    <!-- The global progress bar -->
    <div id="progress" class="progress progress-success progress-striped">
        <div class="bar"></div>
    </div>
    <!-- The container for the uploaded files -->
    <div id="files" class="files" align="center"></div>
</div>